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Chainer v4 PILからNumpy NumpyからPILの変換

Last updated at Posted at 2018-08-28

モジュールインポート

from PIL import Image
import numpy as np

PIL→Numpy


img = Image.open("aaa.png")
numpyArray = np.asarray(img).astype("f").transpose(2, 0, 1) / 128 - 1.0

Numpy→PIL

array = np.asarray(((numpyArray + 1) * 128).astype("i").transpose(1, 2, 0))
img = Image.fromarray(np.uint8(array))
img.show()

特にfromarrayでuint8にするのをよく忘れるので書き留めます。
誰かの役に立つことを祈ります。

まだ始めたばかりなので間違っていたらご指摘お願いします。

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